TTC 2 months now (vent)

I'm starting to get really worried about concieving. I track what I can but, i have never had any type of regular period cycle and that makes knowing ovulation and AF really hard to track. Me and my partner are engaged, and really want to be pregnant. I had an abortion in the beginning of June because of money, family, and relationship issues and I really regret it now. I took the pill (so nonsurgical abortion) and I worry sometimes that that was my only chance. My partner and I have sex practically every day if not a few times a day. The only real reason I see I wouldnt be getting pregnant is we drink a decent amount, him in particular, and we smoke. But when I concieved before we drank and smoked a lot, if not more than now. I take tests often and theyre never positive..... does anybody have some tricks and tips, advice or support? please :( I could use it